EN 60763-3-1-2011 电气用层压板.第3部分:单个材料规范.活页1:LB 3.1A.1和LB3.1A.2型层合预压纸板的要求
Laminated pressboard for electrical purposes - Part 3: Specifications for individual materials - Sheet 1: Requirements for laminated precompressed pressboard, Types LB 3.1A.1 and LB3.1A.2